Explosive engine



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To all whore t may concern;

lle it lrnown that l, daraus It. Cnan'rnn, a citizen of the 'United States, residin:u at b'hicago, in the county of Coole and citate of illinois, have invented a certain new and useful improvement in llilnplosive Engines, of which the following is a specification,

'lf'his invention relates to explosive engines and particularly engines of `the general type vin which the valving operation is produced by a rotatable sleeve concentric with the anis of the cylindenllt is particularly applicable to multiple cylinder vertical gas engines.

'l'he object of the invention is to provide a positively oiled engine which is simple and compact in construction, which is readil accessible fory removal, replacement and a justrnent of parte, which can be easily and cheaply made, which is satisfactory and eilicient in operation, and is not readily liable to get out of order. The invention consists in a device for carrying out the foregoing objects and more particularly in features and details of construction hereafter :fully set forth in the specification and claims.

'll`he singlesheet of drawing shows a vertical sectional view thru one cylinder of an engine equipped with a device of this invention in its preferred form.,

The engine illustrated 'is provided with a cranlr case 2 having, rising from it, a cylinder proper 4lin which reciprocates the usual piston tl driving a connecting rod 8 connected at its lower end to a crank arm l0 on cranlr shaft l2 in the ordinary manner. integral with the cranlr case 2 and surrounding the cylinder l is the water jacket cylinder ld having in it a water space lo. 'llhis combined water yaclret and crank case is preferably rnade of aluminum when light weight is required. lllotatably mounti ed on the outside of the working cylinder gearing dal, 36, and 38 from shaft l2, heretofore referred to.

The supplemental cylinder has formed on it, yadjacent to opposite sides oit the worm wheel 28, danged collars or projections all and d-l which take bearing on parte of the device to hold the supplemental cylinder 26 and consequently the worm wheel Q98 against vertical end motion, ln the particular case here illustrated, collar 4l() bears against the end t2 of the inner wall of the water jaclret and the lower collar ll forms a step bearing of relatively wide surface on the spacing ring at inserted between the cranlr case and the inner cylinder 4l to insure a proper cylindrical space for the sleeve valve 20. 'lhis ring lll is, in the particular case here illustrated, held in place by a separate, flanged plate a6 inserted upward from the crank case as shown and secured in place by any suitable means as for instance, set screws d8,

The parts, heretofore described, are so shaped and arranged that an annular lubricant or oil chamber 5t) is formed around the supplemental cylinder 26l and the worm wheel 28 and the worm 30. @ne of the problems solved by this invention is the maintaining a constant supply of given quantity of lubricant in this chamber and maintaining it at a proper height therein. Vl`his is accomplished in the particular case hereillustrated by providing means for supplying oil to the4 oil space and providing a spill-way or exit port therefrom so arranged that whenever the oil in the chamber reaches a certain point determined by the position of the entrance to said spill-Way, surplus oil above the spill-way passes out of the chamber. ln the particular case, here illustrated oil is supplied thru 4an intalre pipe 54 and the spill-way takes thel form of pipe 56 discharging into the crank case at 59. ln actual practice the oil is continv uously repumped from the engine base to the pipe 54E by the usual form of pump, not shown, so geared as to be driven by the en gine itself.

The step bearing Contact between supplemental cylinder 26 and the ring 44E, heretofore described, is oiled by oil in passages 5S arranged at intervals around the cir cumference of the sleeve and communicating with chamber 50. 'lhese passages 58 also serve the function of conducting oil directly to the surface of Contact between the supplemental cylinder 26 and the inner screw shaped grooves 60 vwhich forcibly feed.

oil, delivered by passages 58, upward along the entire surface between the supplemental cylinders 26 and the sleeve 20.

Similarly the outer circumference of the sleeve, 20 is provided with spiral grooves 62 which receive their supply of oil thru the joints between the teeth 24 and thru positively provided openings 64 placed at suitable intervals 0n the surface of the cylinder and leading thru it, as clearly shown in the dr-awing. The upper end of the main cylinder 4 is, in the particular case herein illustrated, closed by' a cylinder head 68 screw threaded to the cylinder proper at 70. Where exceedingly light construction is required, this head 68 may be -made of alumlnum or other light material. The.com-V bined cylinder and head is detachably secured in place on the main water jacket cylinder by any suitable means as bolts or screws 72 and the head 68 is provided with a water jacket space 74 communicating with the main water jacket space 16, heretofore referred to. The water jacket space is as i usual provided with suitable inlet and outlet ports 76 and 78.

The upper end of the cylinder mechanism above the valve ports 8() is provided with a more or less independent oilmg system comprisinga plurality of rings 82 carried by l inner cylinder 4 and so constructed as to spring outward and take bearing against .the inner surface of the sleeve 20.4 These rings 82 are Continuously supplied 'with oil thru assa s 84, supplied by pipe 86 connecte to t esame pump which delivers oil to pipe 54. The passages 84 are of peculiar'v construction in that the pipe 86 enters the main outer cylinder member 14 and is not disturbed when the cylinder head 68 and the attached-inner cylinder 4 is removed for the purpose of removing the sleeve 20.' The break in -the oil supply is made in passage 84 and not in pipe 86.

The outer surface of lthe sleeve 20 is, at its upper end, provided with oil by one or two methods or'both combined. The first consists in providing asmall oil duct 90 communicating with passage 84'near pipe 86 and leading to the outer surface of sleeve 20. The second consists in providing, thru the sleeve itself, one or more small openings 92 registering with a supplemental duct 94 indirect communication with a portion of passage 84 in inner cylinder 4. The result of this construction is'that as the sleeve 20 rota-tes, these ducts 92 partially or wholly fill with oil every timev they pass passage 94 and then deliver their oil to the surface of contact between sleeve 2O and main cylinder 14.

4their groove.

In assembling the mechanism, the operator first takes crank case 2 and attached outer cylinder 14 and, by removing the base member 96 from the crank. case, inserts supplemental cylinder 26 in position with flange 40 in contact with member 42, then places ring 44 in position and secures it in place thru the agency of plate 46 and its securing devices 48, having previously positioned shaft 32 and its worm 30. The operator now drops sleeve 20 into position vwith teeth 24 in mesh. Hc next puts in position inner cylinder 4 and attached head 68 and secures them in place by securing devices 7 2. Vhen this is done it is only necessary to supply oilto pipes 54 and 86 end to, of course, insert the piston in its connecting rod, the engine, of course, bein supplied with the usual carburetor an igniting mechanism not shown.

When the engine starts, the sleeve 20 rotates in nnisonwith the supplemental cylinder 26 whereupon oil is pumped-thru passages 41 and spiral passageways 60 to the surface of contact between inner cylinder 4 and the sleeve from which it paes in the manner described to the spiral passages 62 which lubricate the outer surface .of the sleeve. Oil is simultaneously delivered thru the pipe 86 to both the innerV and outer surfaces of the upper end of sleeve 20. During all this operation of thesleeve the inner cy inder 4 is positively centered at its top by the fiange 22 bearing against the top of the outer cylinder 14' and is centered at its bottom by the ring 44 thus insuring sufficient space within which the sleeve 2O can rotate. The inner cylinder 4 extends at its lower end freely thru ring 44 and collar 46 so that theJ inner cylinder can expand up and down under all heat conditions of operation.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. ln mechanism of the class described, in combination with an engine cylinder, a sleeve valve having valve ports therein mountedfor rotation with reference to the cylinder, gear mechanism for rotating said sleeve located within a space formed within the cngine structure, means'snpplying oil to said gear containing space, and means ata point above the gearing and below the valve ports permitting automatic drainage therefrom of all the oil in the gear chamber in excess of aI predetermined quantity.

2. In mechanism of the class described, an engine cylinder mechanism, a sleeve valve having valve ports therein rotatable therein,

cated within a chamber formed witbin`the llt? lli

will

natascia cylinder mechanism, means supplying oil to said chamber, and means taining all the oil 'trom said chamber at a predetermined point above its bottom and below the valve ports adapted to automatically maintain a given quantity ot oil within said gear chamber.

3, ln mechanism ot the class described.,`

an outer engine cylinder having a crank case integral therewith, an inner engine cylinder entering said cuter cylinder, spaced apart theretrom at their outer ends to term aspace tor a sleeve valve, a spacing device between the inner and outer cylinders at their cranlr case ends, a locking plate tor the spacing device insertable into the outer cylinder thru the crank case and means for securing said plate in place. t

t, ln mechanism ot the class described, in combination with two spaced apart cylinders, a sleeve valve having spiral grooves termed thereon adapted to leed oil` over a surtace between said sleeve valve and an adjacent cylinder and also having valve ports therein rotatable between said cylinders, meansitor maintaining a predetermined level oit oil adjacent vto said sleeve valve in communication with said spiral grooves on the sleeve valve and below said valve ports.

5. lin mechanism ct the class described,

in combination with a pair ot vertically ar ranged stationary cylinders spaced apart one trom the otherJ and arranged to Aform an oil chamber in the lower portion thereoit, a cylindrical member rotatably mounted in the space between said tirst cylinders on a step bearing at its lower end and in com munication with said oil space there being 'pertorations on the lower end ot' the cylindricalmember `and spiral grooves on its circumterence communicating with said oil space whereby cil therein lubricates both the step bearing tor the lower end ot the cylindrical member and its circumference.

6. lln mechanism ot' the class described, in combination with apair of vertically ar'- ranged stationary cylinders spaced apart one trom the other and. arranged to t'orm an oil chamber in the lower portion thereoit, acylindrical member rotatably mounted in the space between said lirst cylinders on a step bearing at its lower end and in come munication with said oil space there being pei-iterations on the lower end ot' the cylindrical member and spiral grooves ou its circumt'erence communicating with said oil space whereby oil therein lubricatcs both the step bearing :tor the lower end otl the cylindrical member and its circumterence, and means tor automatically maintaining con stant supply ot' oil in said oil space. p

7. lin mechanism ot the class described,

in combination ot two spaced apart engine cylinders, a head closing the ends of said cyl inders, a member rotatable in the space be tween the engine cylinders, an oil opening in the outer surtace ot the inner cylinder contacting the rotatable member, a pipe tor oil leading trom an outside source to a port in the outer cylinder, the whole being so t'ormcd that there is a passageway leading trom said outer supply pipe thru a portion ot the outer cylinder wall thence thru titl the cylinder head and the inner cylinder to a point communicating with said opening tor the purposes set Ytorth.

t3. lin mechanism ot the class described, in combination ot two spaced apart engine cylinders, a head closing the ends ot said cylinders, a member rotatable in the space between the engine cylinders, an oil opening Ain the outer surface ot the inner cylinder one or more ports inthe rotatable member whereby oil is transl-'erred to the outer1 circumiterence ot the rotatable member..

dln mechanism ot the class described, an engine cranlrcase with an outer cylinder having a water aclret space therein integral therewith, an inner cylinder spaced apart trom the outer cylinderand insertable therein to term a space "tor the reception ot the sleeve valve, a cylinder head detachably connectibie to the inner cylinderl secured to the outer cylinder and having a water space therein connecting with the main water space ot the outer cylinder, and means insertable thru the cranlr case between the outer and inner cylinders to detachably positively space them apart so as to maintain proper relationship with reterence to a sleeve valve inserted between them.

l0. 1li device ot the class described, including two concentric cylinders ot ditferent sizes to torni a space between them, a valve member in said space, a separate ring space' member insertable between adjacent walls oi the two cylinders spacing them apart to maintain the valve space constant, and another ring detachably secured to the outer cylinder positioning the space ring against endwise movement.

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